Webbing retractor
AssigneeKabushiki Kaisha Tokai Rika Denki Seisakusho
InventorsTomonori Nagata, Kazuhiko Aihara, Katsuki Asagiri, Yasuho Kitazawa
Life of this patent
Estimating the term…
Abstract
A webbing retractor is provided. When assembled, due to a positional relationship which is such that insert-in portions are formed between a tubular portion of a lock base and a spool shaft, grooves are formed at the tubular portion and a portion of the spool shaft. An elastically deformable terminal end portion is formed at a stopper which is press-fit into an insert-in hole. In a state in which the stopper also is installed, not only press-in load in a thrusting direction, but also press-in load in a radial direction is applied between the lock base and a spool such that a structure is fixed.
Claims20
A webbing retractor comprising:
- a spool taking up a webbing, for restraining a vehicle occupant, in a roll form by urging force;
- an energy absorbing member connected coaxially to the spool and usually rotating integrally with the spool, and in a state in which rotation of the energy absorbing member in a webbing pull-out direction is impeded, the energy absorbing member deforms due to load of a predetermined value or more being applied to the energy absorbing member via the spool, and permits a predetermined amount of rotation of the spool in the webbing pull-out direction;
- a locking device, one portion of the locking device being coaxially inserted between the energy absorbing member and the spool, the locking device stopping rotation of the energy absorbing member in the webbing pull-out direction at a time of rapid deceleration of a vehicle;
- and
- a stopper member installed between an outer peripheral surface of one portion of the locking device and an inner peripheral surface of the spool by being inserted from a direction orthogonal to an axis, the stopper member applying both press-in load in a thrusting direction and press-in load in a radial direction between one portion of the locking device and the spool.
Dependencies are inferred from the claim text.